On Tuesday, Dish’s chairman Charlie Ergensent a letter to Clearwire complaining about comments Sprint made about Dish’s bid. This bit of fighting comes even as Dish attempts to convince Sprint that Dish’s offer for Sprint is better than Softbank’s offer.

In its letter, Dish alleges Sprint has made “misleading” statements and decries Sprint’s arguments as defying logic and being “simply untrue.”

“We remain confident that the DISH proposal is both actionable and clearly superior to the proposed Sprint merger,” Ergen wrote. “More importantly, it also provides a meaningful alternative to the significant group of your minority stockholders that remain opposed to the Sprint merger while providing a clear path for Clearwire to become a self-sustaining company.”